<style>
    body {
        background-color: black;
        font-family: monospace;
        color: green;
    }
    #orange-text {
        color: orange;
    }
    .pink-text {
        color: pink !important;
    }
    .blue-text {
        color: blue;
    }
</style>
<h1 id="orange-text" class="pink-text blue-text" style="color: white">Hello World!</h1>